Wind turbine generator blade reinforcing device

Abstract

The utility model discloses a wind turbine generator blade reinforcing device, and relates to the technical field of wind power generation. The device comprises a shell, a main beam and a web plate, and a plurality of supporting and fixing mechanisms are arranged on the side, close to the inner wall of the shell, of the web plate in the length direction of the shell; the supporting and fixing mechanism comprises first supports fixed to the upper side and the lower side of the web correspondingly. Reinforcing plates are hinged to the first supports; the ends, close to the inner wall of the shell, of the reinforcing plates are of arc-shaped structures correspondingly. Second supports are fixed to the sides, close to each other, of the two reinforcing plates. Expanding support rods are hinged to the second supports; a supporting shaft is arranged between the two reinforcing plates in the length direction of the shell. The supporting shafts are fixed to the web through telescopic connecting rods. The blade has the beneficial effects that the blade can be reinforced in the width direction of the blade, and the strength of the blade is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially, relate to a kind of wind turbine blade reinforcing device. BACKGROUND

[0002] Wind-driven generator is the mechanical work that wind energy is converted into, mechanical work drives rotor rotation, ultimately output ac power equipment, is a kind of green power generation mode.Wind turbine blade is very huge, so the material requirement is very high, not only need to have relatively light weight, also need to have higher strength, corrosion resistance, fatigue resistance, now fan manufacturer widely uses composite material to manufacture fan blade, however its too huge volume is still easy to cause damage due to external wind volume too big.Currently, the blade is usually arranged in the length direction of the blade inside the web to share the bending load received by the blade, however, the blade is not provided with a suitable reinforcing method in the width direction, and there is a defect. SUMMARY

[0003] The utility model provides a kind of wind turbine blade reinforcing device to solve the technical problems existing in the above, it can reinforce in the width direction of blade, improve blade strength.

[0004] The technical scheme adopted by the utility model is: provide a kind of wind turbine blade reinforcing device, including shell, main beam and web, multiple bracing mechanisms are arranged on the side of web close to the inner wall of shell along the length direction of shell;

[0005] The bracing mechanism includes the first support fixed on the upper and lower sides of web respectively;First support is hinged with reinforcing plate on each side;The end of reinforcing plate close to the inner wall of shell is correspondingly provided as arc structure;Second support is fixed on the side close to each other of two reinforcing plates;Expansion rod is hinged on second support;Supporting shaft is arranged between two reinforcing plates along the length direction of shell;Supporting shaft is fixed with web through telescopic connecting rod;Two collars are rotatably connected on supporting shaft;Two collars are staggered along the axial direction of supporting shaft;Collar and expansion rod are fixed one by one respectively;Tension spring is connected between supporting shaft and web;The telescopic direction of tension spring is consistent with the telescopic direction of telescopic connecting rod.

[0006] Further optimize the technical scheme, the supporting shaft of a kind of wind turbine blade reinforcing device is screwed through and connected with adjusting screw;The end of adjusting screw close to web is rotatably connected with sleeve seat;The end of tension spring close to supporting shaft is fixed with sleeve seat correspondingly.

[0007] Further optimize the technical scheme, the side of reinforcing plate close to the inner wall of shell is sequentially fixed with buffer layer and adhesive layer.

[0008] The utility model has the advantages that:

[0009] 1. The tension of the tension spring can pull the support axial web closer, which can cause the expansion rod to expand the reinforcing plate towards the inner wall of the shell. Through the support of the reinforcing plate and the inner wall of the shell, the shell is reinforced in the width direction.

[0010] 2. Multiple bracing mechanisms are provided on the side of the web near the inner wall of the shell along the length of the shell to ensure a more comprehensive distribution inside the shell and to ensure the reinforcement effect of the blade in the width direction.

[0011] 3. The end of the reinforcing plate closest to the inner wall of the shell is designed with an arc shape, so that the contact area between the reinforcing plate and the inner wall of the shell is curved. This increases the support area between the reinforcing plate and the inner wall of the shell, reduces the pressure on the shell, and avoids damage to the shell caused by the reinforcing plate contacting the shell in the expanded state.

[0012] 4. The support shaft is fixed to the web plate by a telescopic connecting rod. The extension and retraction direction of the tension spring is the same as that of the telescopic connecting rod. The telescopic connecting rod restricts the support shaft, ensuring that the support shaft only has the freedom to move along the extension and retraction direction of the telescopic connecting rod, and ensuring that the reinforcement plate can be smoothly expanded by the expansion rod. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the blade.

[0014] Figure 2 A partial structural diagram showing the arrangement of the support mechanism inside the shell;

[0015] Figure 3 A schematic diagram of the support mechanism;

[0016] Figure 4 This is a schematic diagram of the structure of the buffer layer and the adhesive layer.

[0017] In the diagram, 1 is the shell; 2 is the main beam; 3 is the web; 4 is the first support; 5 is the reinforcing plate; 6 is the second support; 7 is the expansion rod; 8 is the support shaft; 9 is the telescopic connecting rod; 10 is the collar; 11 is the tension spring; 12 is the adjusting screw; 13 is the sleeve; 14 is the buffer layer; and 15 is the adhesive layer. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown, a wind turbine blade reinforcement device includes a shell 1, a main beam 2 and a web 3. Multiple reinforcement mechanisms are provided on the side of the web 3 near the inner wall of the shell 1 along the length of the shell 1.

[0020] like Figures 2-3As shown, the support mechanism includes a first support 4 fixed on the upper and lower sides of the web plate 3 respectively; the first support 4 is hingedly connected with a reinforcing plate 5; the end of the reinforcing plate 5 close to the inner wall of the shell 1 is correspondingly provided in an arc-shaped structure; the side of the two reinforcing plates 5 close to each other is fixed with a second support 6; the second support 6 is hingedly connected with an expansion rod 7; a support shaft 8 is arranged between the two reinforcing plates 5 along the length direction of the shell 1; the support shaft 8 is fixed with the web plate 3 through an extension connecting rod 9; the support shaft 8 is rotatably sleeved with two sleeve rings 10; the two sleeve rings 10 are arranged in a staggered manner along the axial direction of the support shaft 8; the sleeve ring 10 is fixed with the expansion rod 7 one by one; the support shaft 8 is connected with the web plate 3 through a tension spring 11; the extension direction of the tension spring 11 is consistent with the extension direction of the extension connecting rod 9.

[0021] When the shell 1 is assembled, the tension spring 11 pulls the support shaft 8 to be close to the web plate 3, and through the rotation connection of the sleeve ring 10 and the support shaft 8 and the hinge connection of the expansion rod 7 and the second support 6, the two expansion rods 7 can be unfolded and push the reinforcing plate 5 to rotate, so that the reinforcing plate 5 can be close to the inner wall of the shell 1, thereby supporting the inner wall of the shell 1; through the arrangement of multiple support mechanisms, the shell 1 can be more comprehensively reinforced in the width direction.

[0022] In addition, in the above process, the reinforcing plate 5 supports the inner wall of the shell 1 through the tension of the tension spring 11, which can adapt to different space conditions of the inner wall of the shell 1, and has strong adaptability. It should be noted that, Figure 2 In order to facilitate the intuitive display of the specific structure of the support mechanism, only the support mechanism on one side of the web plate 3 is shown.

[0023] As shown in Figures 2-3 The support shaft 8 is threadedly connected with an adjusting screw 12; the end of the adjusting screw 12 close to the web plate 3 is rotatably connected with a sleeve seat 13; the end of the tension spring 11 close to the support shaft 8 is fixed with the sleeve seat 13. Through the adjusting screw 12, the tension of the tension spring 11 when the reinforcing plate 5 supports the inner wall of the shell 1, that is, the contact force between the reinforcing plate 5 and the inner wall of the shell 1, can be adjusted, so as to avoid that the contact force is too large or too small. If the contact force is too large, it will increase the risk of deformation and damage of the shell 1, and if the contact force is too small, it will not have enough reinforcing effect.

[0024] As shown in Figure 4 The side of the reinforcing plate 5 close to the inner wall of the shell 1 is sequentially fixed with a buffer layer 14 and an adhesive layer 15. The buffer layer 14 can have a buffering effect when the shell 1 is impacted, and the adhesive layer 15 can be fixed with the shell 1 to avoid friction between the shell 1 and the reinforcing plate 5 when impacted, thereby affecting the service life.

[0025] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A wind turbine blade reinforcement device comprising a shell (1), a main beam (2) and a web (3), characterized in that: A plurality of supporting mechanisms are arranged on the web plate (3) near the inner wall of the shell (1) along the length direction of the shell (1); The supporting mechanism comprises first supports (4) fixed on the upper and lower sides of the web plate (3) respectively; the first supports (4) are both hingedly connected with reinforcing plates (5); the reinforcing plates (5) are correspondingly arranged in arc shape near the inner wall of the shell (1); the second supports (6) are fixed on the sides of the two reinforcing plates (5) close to each other; the expansion rods (7) are hingedly connected to the second supports (6); the support shafts (8) are arranged between the two reinforcing plates (5) along the length direction of the shell (1); the support shafts (8) are fixed to the web plate (3) through the telescopic connecting rods (9); the two sleeve rings (10) are rotatably sleeved on the support shafts (8); the two sleeve rings (10) are arranged in staggered manner along the axial direction of the support shafts (8); the sleeve rings (10) and the expansion rods (7) are fixed one by one respectively; the pull springs (11) are connected between the support shafts (8) and the web plate (3); the extension direction of the pull springs (11) is consistent with the extension direction of the telescopic connecting rods (9).

2. A wind turbine blade reinforcement device according to claim 1, characterised in that: The adjusting screw rods (12) are threadedly connected on the support shafts (8); the sleeve seats (13) are rotatably connected to the ends of the adjusting screw rods (12) close to the web plate (3); the ends of the pull springs (11) close to the support shafts (8) are fixed to the sleeve seats (13) correspondingly.

3. A wind turbine blade reinforcement device according to claim 1, wherein: The reinforcing plates (5) are sequentially fixed with the buffer layers (14) and the adhesive layers (15) on the sides close to the inner wall of the shell (1).

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